<template>
    <el-row class="tac">
      <el-col :span="8">
        <h5>不带 icon</h5>
        <el-menu default-active="2" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose" theme="dark">
          <el-submenu index="1">
            <template slot="title">导航一</template>
            <el-menu-item-group title="分组一">
              <el-menu-item index="1-1">选项1</el-menu-item>
              <el-menu-item index="1-2">选项2</el-menu-item>
            </el-menu-item-group>
            <el-menu-item-group title="分组2">
              <el-menu-item index="1-3">选项3</el-menu-item>
            </el-menu-item-group>
            <el-submenu index="1-4">
              <template slot="title">选项4</template>
              <el-menu-item index="1-4-1">选项1</el-menu-item>
            </el-submenu>
          </el-submenu>
          <el-menu-item index="2">导航二</el-menu-item>
          <el-menu-item index="3">导航三</el-menu-item>
        </el-menu>
      </el-col>
    </el-row>
</template>

<script>
  export default {
    methods: {
      handleOpen(key, keyPath) {
        console.log(key, keyPath);
      },
      handleClose(key, keyPath) {
        console.log(key, keyPath);
      }
    }
  }
</script>
